From owner-freebsd-net@FreeBSD.ORG Fri Mar 14 15:37:51 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id DBE91106566C for ; Fri, 14 Mar 2008 15:37:51 +0000 (UTC) (envelope-from auryn@zirakzigil.org) Received: from aurynhome1sv1.zirakzigil.org (mail.zirakzigil.org [82.63.178.63]) by mx1.freebsd.org (Postfix) with SMTP id 1DD8F8FC62 for ; Fri, 14 Mar 2008 15:37:50 +0000 (UTC) (envelope-from auryn@zirakzigil.org) Received: (qmail 75019 invoked by uid 98); 14 Mar 2008 15:37:48 -0000 Received: from 89.96.52.22 by aurynhome1sv1.zirakzigil.org (envelope-from , uid 89) with qmail-scanner-1.25 ( Clear:RC:0(89.96.52.22):. Processed in 0.044069 secs); 14 Mar 2008 15:37:48 -0000 X-Qmail-Scanner-Mail-From: auryn@zirakzigil.org via aurynhome1sv1.zirakzigil.org X-Qmail-Scanner: 1.25 (Clear:RC:0(89.96.52.22):. Processed in 0.044069 secs) Received: from unknown (HELO aurynmob2.giulioferro.it) (auryn@zirakzigil.org@89.96.52.22) by 0 with SMTP; 14 Mar 2008 15:37:48 -0000 Message-ID: <47DA9BC0.8030205@zirakzigil.org> Date: Fri, 14 Mar 2008 16:37:36 +0100 From: Giulio Ferro User-Agent: Thunderbird 2.0.0.5 (X11/20070724) MIME-Version: 1.0 To: pyunyh@gmail.com, Sam Leffler , Andrew Thompson , freebsd-net@freebsd.org References: <47D7C34E.8060805@zirakzigil.org> <47D817D2.9010306@errno.com> <47D8499A.5070605@zirakzigil.org> <20080313033029.GF16972@cdnetworks.co.kr> <47D92F9D.4070701@zirakzigil.org> <20080314001704.GA22788@cdnetworks.co.kr> <47DA4DCD.6050304@zirakzigil.org> <20080314101555.GF22788@cdnetworks.co.kr> <47DA682E.9010504@zirakzigil.org> <20080314122708.GG22788@cdnetworks.co.kr> In-Reply-To: <20080314122708.GG22788@cdnetworks.co.kr> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: Subject: Re: VLAN trunking and fragmentation X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Mar 2008 15:37:52 -0000 Pyun YongHyeon wrote: > This hardware really make me crazy. There had been many attempts to > fix checksum offload related issues. But it seems that several users > still suffer from bad checksum or VLAN issues. So I guess the root > cause of hardware bug was not yet known. This means that previous > patch to work around hardware bug is not complete. > > Hmm, I'm not sure but it could be related with padding. What makes > me wonder is why the first packet of fragmented packet does not > show up on destination host. I guess the second packet of fragmented > packet may be composed of single mbuf. From these information I > will experiment possible combination of work around in next week. > I'll let you know when I have a code. > > Great! Thanks for the good job.